Open type earphone

Abstract

The utility model discloses an open type earphone, which comprises a functional part, a sound production part and a connecting bridge for connecting the functional part and the sound production part, and is characterized in that the sound production part comprises a first shell, a second shell and a loudspeaker assembly. The first shell is connected with the connecting bridge; the second shell is provided with a sound outlet hole, and the second shell and the first shell are nested and rotationally connected, so that the second shell is telescopic relative to the first shell; according to the earphone, the position of the sound outlet hole can be adaptively adjusted, and the listening effect in the use process of the earphone is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of earphones, and particularly to an open earphone. Background Art

[0002] In related technologies, open earphones include ear-clip earphones and ear-hook earphones. Taking the ear-clip earphones as an example, the ear-clip earphones are fixed on the user's ears by clamping the user's auricles. The sound-emitting components of the ear-clip earphones do not extend into the ear canals. At the same time, the sound outlets of the ear-clip earphones are usually fixed. In this way, the distances between the sound outlets and the user's ear canals are different when different users wear the ear-clip earphones. Especially for users with larger ear sizes, since the sound-emitting components are too far away from the user's ear canals, it is easy to cause the volume of the sound emitted by the sound-emitting components transmitted into the user's ear canals to be too small, resulting in poor listening effects. Utility Model Content

[0003] The embodiments of the present application provide an open earphone, which can adaptively adjust the position between the sound outlet of the open earphone and the ear canal, and improve the listening effect.

[0004] The embodiments of the present application provide an open earphone, including a functional component, a sound-emitting component, and a connection bridge connecting the functional component and the sound-emitting component. The sound-emitting component includes a first housing, a second housing, and a speaker assembly. The first housing is connected to the connection bridge; the second housing has a sound outlet, and the second housing is nested and rotatably connected with the first housing so that the second housing can be telescopic relative to the first housing; thereby enabling the open earphone to adjust the distance between the sound outlet and the user's ear canal when worn.

[0005] Based on the open earphone of the embodiments of the present application, the second housing is spirally connected to the first housing, so that the second housing can make a telescopic movement relative to the first housing, thereby adjusting the distance from the sound outlet to the ear canal. Therefore, when the user feels that the volume of the speaker assembly is too small, the second housing can be telescoped to shorten the distance from the sound outlet to the ear canal to increase the sound. When the user feels uncomfortable due to the unreasonable position of the second housing in the ear canal area, the second housing is telescoped to increase the distance from the second housing to the ear canal. With such a setting, the ear-clip earphones of the present application can adjust the distance between the sound outlet and the user's ear canal when worn, so as to be applicable to users with different ear sizes and improve the listening effect. Description of the Drawings

[0006] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0007] Figure 1 This is a schematic structural diagram of an earclip-type headphone provided by an embodiment of the present application, where the second housing is in the first position after adjustment;

[0008] Figure 2 This is a schematic structural diagram of an earclip-type headphone provided by an embodiment of the present application, where the second housing is in the second position after adjustment;

[0009] Figure 3 This is a cross-sectional schematic diagram of an earclip-type headphone provided by an embodiment of the present application;

[0010] Figure 4 This is a first exploded schematic diagram of an earclip-type headphone provided by an embodiment of the present application;

[0011] Figure 5 This is a second exploded schematic diagram of an earclip-type headphone provided by an embodiment of the present application;

[0012] Figure 6 This is a schematic structural diagram of a knob provided by an embodiment of the present application;

[0013] Figure 7 This is a schematic structural diagram of the knob provided by an embodiment of the present application from another perspective;

[0014] Figure 8 This is a schematic structural diagram of the main housing provided by an embodiment of the present application.

[0015] Explanation of the reference numerals in the drawings:

[0016] 1. Earclip-type headphone; 10. Connecting bridge; 20. Functional component; 21. Outer shell; 30. Sound generating component; 31. First housing; 311. Main housing; 311a. Open slot; 311b. Installation cavity; 311c. Notch slot; 311d. Slot; 3111. Outer shell body; 3112. Inner cylinder; 3112a. Sound outlet hole; 3113. Front shell; 3114. Rear shell; 312. Knob; 3121. Sleeve part; 3122. Installation part; 3123. Avoidance slot; 3124. Connecting body; 3125. Inner folded edge; 313. Thread; 314. Slide groove; 315. Guide rib; 32. Second housing; 321. Sound outlet hole; 322. Spiral groove; 323. Guide groove; 33. Speaker assembly; 34. Limiting part; 341. Substrate; 342. Insert pin; 35. Damping member; 60. Acoustic damping net; 70. Protective net.

[0017] The realization, functional features and advantages of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present application in conjunction with the accompanying drawings.

[0019] When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods that are consistent with some aspects of the present invention as detailed in the appended claims.

[0020] In the description of the present invention, it should be understood that terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] In the related art, open earphones include earclip earphones and earhook earphones. Taking the earclip earphones as an example, the earclip earphones are fixed on the user's ears by clamping the user's auricles. The sound generating components of the earclip earphones do not extend into the ear canal, and at the same time, the sound outlet of the earclip earphones is usually fixed. The earhook earphones have an earhook, and the sound generating components are relatively fixed to the user's ear through the earhook, and the specific position of the sound generating components relative to the user's ear canal is also relatively fixed. This will result in different distances between the sound outlet and the user's ear canal when different users wear the earclip earphones. Especially for users with larger ear sizes, since the sound generating components are too far away from the user's ear canal, it is easy to cause the volume of the sound emitted by the sound generating components to be too small when transmitted into the user's ear canal, resulting in a poor user experience.

[0023] Embodiments of the present application propose an open-ear headset. It can be understood that the open-ear headset of the present application includes an ear-hook headset and an ear-clip headset 1. Figure 1 FIG. shows a schematic structural diagram of an open-ear headset according to an embodiment of the present invention. In this embodiment, the ear-clip headset 1 is taken as an example to describe the open-ear headset according to the present invention. The ear-clip headset 1 can be communicatively connected to devices such as a mobile phone, a computer, an MP3 player, and a wearable audio device. It should be understood that without departing from the concept of the present invention, the open-ear headset can also be designed in other forms, such as an ear-hook headset, etc.

[0024] Please refer to Figure 1 and Figure 2 , the ear-clip headset 1 includes a connecting bridge 10, a functional component 20, and a sound-emitting component 30. Please refer to Figure 3 and Figure 4 , the sound-emitting component 30 includes a first housing 31, a second housing 32, and a speaker assembly 33. The second housing 32 has a sound outlet hole 321. The second housing 32 is nested and rotatably connected with the first housing 31 and can perform telescopic movement relative to the first housing 31. The speaker assembly 33 can be installed in the first housing 31 or on the second housing 32. The sound emitted by the speaker assembly 33 is transmitted outward through the sound outlet hole 321 of the second housing 32. Exemplarily, the speaker assembly 33 is installed in the first housing 31.

[0025] The functional component 20 includes a housing 21, a battery, a control circuit board, and a key switch (not shown in the figure). The battery and the control circuit board are installed in the housing 21. The battery supplies electrical energy to the speaker assembly 33 and the control circuit board. The control circuit board is electrically connected to the speaker assembly 33. The key switch is installed on the outer surface of the housing 21 and is electrically connected to the control circuit board, so that the user can control the working state of the sound-emitting component 30 through the externally provided key switch (for example: switching songs, adjusting volume, power-on and power-off operations, etc.).

[0026] Among them, the materials of the housing 21 and the first housing 31 can be plastic, silicone, etc., and the present application does not limit this. And the shapes of the housing 21 and the first housing 31 can be the same or different, and their volumes can also be the same or different. For example, the housing 21 can be approximately a cylindrical structure or approximately a spherical structure. And the first housing 31 can be approximately a cylindrical structure or approximately a rectangular structure. In some other embodiments, the control circuit board can also be installed in the first housing 31.

[0027] One end of the connecting bridge 10 is connected to the first housing 31 of the sound generating component 30, and the other end is connected to the outer housing 21 of the functional component 20. In the worn state, the sound generating component 30, the functional component 20, and the connecting bridge 10 cooperate together to generate a clamping force. In the worn state, the sound generating component 30 is located inside the concha cavity or partially inside the concha cavity, and the functional component 20 is located behind the auricle, such as behind the helix or behind the antitragus. Thus, mainly the sound generating component 30 and the functional component 20 cooperate to clamp the auricle and maintain the position on the ear. Among them, the connecting bridge 10 may include an outer covering and a shape memory wire disposed inside the outer covering. The shape memory wire is usually composed of materials such as nickel, titanium, platinum, copper, silver, etc., and has high elasticity, wear resistance, and stability. In this way, during the wearing process, it can ensure that there is an appropriate pressure between the sound generating component 30 and the functional component 20 and the ear, so that the ear clip-type earphone 1 is more firmly fixed around the ear and is not easy to loosen and swing.

[0028] For different people, the distance from the edge of the ear to the ear canal opening may be different. Therefore, when using the ear clip-type earphone 1, when the spacing of the sound outlet holes 321 of the second housing 32 is fixed, for users with larger ear sizes, since the sound outlet holes 321 of the second housing 32 may be too far from the ear canal opening, it is easy to cause the volume transmitted by the speaker assembly 33 to the user's ear canal opening to be too small. For users with relatively smaller ears, since the second housing 32 may extend beyond the range of the ear canal opening and the position of the second housing 32 in the area of the ear canal opening is not appropriate, this may cause ear discomfort or even pain. At the same time, the user may obtain poor headphone sound quality.

[0029] Therefore, the inventive concept of this application lies in: nesting and spirally connecting the second housing 32 and the first housing 31, so that the second housing 32 can move telescopically relative to the first housing 31, thereby adjusting the distance from the sound outlet holes 321 to the ear canal opening. Therefore, when the user feels that the volume of the speaker assembly 33 is too small, the distance from the sound outlet holes 321 to the ear canal opening can be shortened by rotating the second housing 32 to increase the sound. When the user feels that the area of the second housing 32 at the ear canal opening is unreasonable and causes discomfort, the distance from the second housing 32 to the ear canal opening is increased by rotating the second housing 32. With such a setting, the ear clip-type earphone 1 of this application can adjust the distance between the sound outlet holes 321 and the user's ear canal opening when worn, so as to be applicable to users with different ear sizes.

[0030] In one embodiment, the first housing 31 and the second housing 32 are in threaded cooperation. Specifically, a threaded structure can be provided on the outer wall surface of the first housing 31 and the inner wall surface of the second housing 32, or a threaded structure can be provided on the inner wall surface of the first housing 31 and the outer wall surface of the second housing 32. With the cooperation of the threaded structure, the distance from the sound outlet holes 321 to the ear canal opening can be adjusted by rotating the second housing 32, and the operation is simple.

[0031] Please refer to Figures 3 to 5 In one embodiment, one of the first housing 31 and the second housing 32 is provided with a spiral groove 322, and the other is provided with a thread 313, and the thread 313 is in threaded engagement with the spiral groove 322. Exemplarily, the first housing 31 is provided with a thread 313, wherein the thread 313 is spirally arranged along the axial direction of the first housing 31. The second housing 32 is provided with a spiral groove 322, and the spiral groove 322 is spirally arranged along the axial direction of the second housing 32. In use, the thread 313 can slide along the spiral groove 322, so that the second housing 32 can telescopically move relative to the first housing 31, thereby adjusting the distance between the sound outlet hole 321 and the user's ear canal opening. The spiral connection mode adopted by the first housing 31 and the second housing 32 of the present application is simple to operate, and the user can realize precise telescopic control of the second housing 32 through spiral fine adjustment to meet the adjustment needs of different users.

[0032] To facilitate the operation to realize the telescopic movement of the second housing 32, continue to refer to Figures 3 to 5 In the embodiment of the present application, the first housing 31 includes a main housing 311 and a knob 312. The knob 312 is rotatably sleeved outside the main housing 311. One of the knob 312 and the second housing 32 is provided with a spiral groove 322, and the other is provided with a thread 313. Exemplarily, the knob 312 is provided with a thread 313, and the second housing 32 is provided with a spiral groove 322. In use, since the knob 312 is sleeved outside the main housing 311 and is in an exposed form, when the user rotates the knob 312, the thread 313 will be driven to rotate, thereby driving the second housing 32 to perform a telescopic movement. Such operation is simple, and in the form that the knob 312 of the present application is sleeved outside the main housing 311, the knob 312 can also protect and hide the second housing 32.

[0033] Of course, in other embodiments, the first housing 31 may not be provided with the main housing 311 and the knob 312, and is in an integral structure form. Instead, the second housing 32 can be sleeved outside the first housing 31, or the second housing 32 can be embedded inside the first housing 31. By screwing the second housing 32, the telescopic movement of the second housing 32 relative to the first housing 31 can also be realized. Here, the present application does not limit the specific spiral connection mode of the first housing 31 and the second housing 32.

[0034] To improve the stability when the first housing 31 and the second housing 32 are spirally connected, a stop portion can be provided on one side of the thread 313 and the spiral groove 322 to avoid the risk of the first housing 31 and the second housing 32 disengaging after being spirally connected to a certain position.

[0035] Further, please refer to in combination Figure 6, the knob 312 includes a sleeve portion 3121 and a mounting portion 3122. The sleeve portion 3121 is sleeved outside the main housing 311. The mounting portion 3122 is connected to one end of the sleeve portion 3121 away from the connection bridge 10 and extends inwards from the sleeve portion 3121. Wherein, a thread 313 is provided on the mounting portion 3122. When in use, the user twists the sleeve portion 3121 to drive the mounting portion 3122 to rotate, so that the thread 313 can be in screw fit with the spiral groove 322 to enable the second housing 32 to perform telescopic movement. With such a setting, the position of the thread 313 can be adjusted by designing the mounting portion 3122 to overcome the wall thickness of the main housing 311 and be in screw connection with the second housing 32 located inside the main housing 311.

[0036] In one embodiment, please refer to Figure 4 and Figure 5 , a limiting member 34 is provided on the main housing 311. The limiting member 34 is used to limit the knob 312 to prevent the knob 312 from detaching from the main housing 311 in the direction away from the connection bridge 10. In this way, it can be ensured that the knob 312 rotates within a specific range, avoiding the situation that the knob 312 becomes loose during use and is difficult to adjust. In some connection methods, the limiting member 34 can be connected to the side of the main housing 311 away from the connection bridge 10 and be in limiting abutment with the mounting portion 3122.

[0037] For the convenience of installing the limiting member 34 and the main housing 311, please refer to Figure 4 and Figure 5 , the limiting member 34 includes a base body 341 and a pin 342. The pin 342 protrudes from the base body 341. A slot 311d is provided on the end face of the main housing 311 away from the connection bridge 10. The pin 342 is inserted into the slot 311d, and the base body 341 limits the mounting portion 3122. When the limiting member 34 is installed on the main housing 311, the pin 342 can be easily inserted into the slot 311d on the main housing 311 to achieve quick and stable installation, improving production efficiency. After installation, the base body 341 limits the mounting portion 3122 to ensure that the mounting portion 3122 remains stable during operation and does not have accidental displacement or loosening.

[0038] An avoidance groove 3123 extending along the circumferential direction of the mounting portion 3122 is provided on the mounting portion 3122. The pin 342 passes through the avoidance groove 3123. During the process of the knob 312 rotating relative to the main housing 311, the pin 342 slides relatively along the avoidance groove 3123. During the rotation of the knob 312, the pin 342 passes through the avoidance groove 3123 on the mounting portion 3122 and slides along the avoidance groove 3123 during the rotation of the knob 312. In this way, the pin 342 does not interfere with the rotation of the knob 312.

[0039] Furthermore, the base 341 is arranged in a ring shape and is arranged around the outside of the second shell 32. In this way, the base 341 can evenly distribute stress and improve the overall strength and stability of the structure. Among them, the base 341 forms a limiting hole, and the second shell 32 is passed through the limiting hole. After the limiting member 34 is installed, the base 341 can also play a limiting and guiding role in the movement of the second shell 32, so that the telescopic movement of the second shell 32 is smoother, and the ring-shaped base 341 is exposed as a whole. In actual product design, the base 341 can also be given a bright color, or a smooth outer surface with a sense of technology can be adopted, so as to enhance the aesthetics of the entire headset.

[0040] In some other embodiments, the limit member 34 can also be formed as a protrusion provided on the inner wall surface of the knob 312, and a groove provided on the outer wall surface of the main shell 311, wherein the groove is arranged around the main shell 311. After the knob 312 is sleeved on the outer wall surface of the main shell 311, the protrusion is embedded in the groove, which can also prevent the knob 312 from separating from the main shell 311 during rotation.

[0041] For some structural forms, see Figure 6 The mounting portion 3122 includes a connecting body 3124 and an inner fold 3125 connected to each other. One end of the connecting body 3124 away from the inner fold 3125 is connected to the sleeve portion 3121. The inner fold 3125 is provided with a screw thread 313 and is spaced apart from the sleeve portion 3121. In the above content, the avoidance groove 3123 is provided on the connecting body 3124.

[0042] For further information, see Figure 6 and Figure 7 The sleeve portion 3121, the connecting body 3124 and the inner folding edge 3125 are enclosed together to form a slide groove 314, and at least a portion of the main housing 311 is embedded in the slide groove 314 and can slide relatively along the slide groove 314, that is, after assembly, the connecting body 3124 is in the form of spanning the end face of the main housing 311 away from the connecting bridge 10, so that the screw thread 313 on the inner folding edge 3125 can extend into the inner side of the main housing 311 and spirally cooperate with the spiral groove 322. In this way, after at least a portion of the main housing 311 is embedded in the slide groove 314, the knob 312 can be prevented from being disengaged in the direction of the main housing 311 approaching the connecting bridge 10, and the stopper 34 can prevent the knob 312 from being disengaged in the direction of the main housing 311 away from the connecting bridge 10, so that the working stability of the knob 312 can be improved.

[0043] It can be understood that in other embodiments, the knob 312 may not be provided with the mounting portion 3122, and the screw thread 313 may be provided on the inner wall of the sleeve portion 3121, and then a groove for avoiding the screw thread 313 is provided on the main shell 311. The screw thread 313 passes through the groove and extends into the inner side of the main shell 311 so as to be spirally matched with the spiral groove 322.

[0044] For some examples, see Figure 3 The ear clip earphone 1 further includes a damping member 35, which is sandwiched between the knob 312 and the main housing 311 and is used to provide a damping force during the rotation of the knob 312 and the main housing 311. This arrangement can provide a rotation damping feel, making the operation of the knob 312 smoother. The damping member 35 can be in the form of a damping ring, a damping sheet, etc., and is made of materials including but not limited to silicone, rubber, etc.

[0045] For further information, see Figure 4 and Figure 5 The outer wall of the main housing 311 is also provided with a notch groove 311c, and the sleeve portion 3121 is received in the notch groove 311c, so that the outer wall of the sleeve portion 3121 is coplanar with the outer wall of the main housing 311. In this way, there will be no excessively protruding structures or components on the outer wall of the ear clip type earphone 1, which can provide a better wearing effect for the user and avoid discomfort such as ear irritation. In addition, the overall appearance can be made more beautiful and neat, and the aesthetic value of the product can be improved.

[0046] In order to improve the stability of the telescopic movement of the second housing 32, please refer to Figures 3 to 5 The main housing 311 is provided with an open groove 311a on one side facing the second housing 32. The second housing 32 is located in the open groove 311a and can perform telescopic sliding motion along the open groove 311a. The open groove 311a can provide stable guidance and support for the second housing 32, reduce swing and deviation during movement, and improve the stability and reliability of the system.

[0047] For further information, please refer to Figure 5 and Figure 8 , one of the groove wall of the open groove 311a and the second shell 32 is provided with a guide rib 315, and the other of the two is provided with a guide groove 323, and the guide rib 315 and the guide groove 323 both extend along the telescopic direction of the second shell 32, and the guide rib 315 slides in the guide groove 323. Exemplarily, the outer wall surface of the second shell 32 is provided with a guide groove 323, and the groove wall of the open groove 311a is provided with a guide rib 315, and the guide rib 315 and the guide groove 323 cooperate with each other, which can effectively limit the deviation of the second shell 32 in the open groove 311a and ensure that it slides along the set track. This design greatly improves the guiding stability and reduces unnecessary shaking and deviation.

[0048] The main shell 311 includes an outer shell 3111 and an inner cylinder 3112. The inner cylinder 3112 is arranged on the inner side of the outer shell 3111, and an open groove 311a is formed between the inner cylinder 3112 and the outer shell 3111. A sound outlet hole 3112a is arranged at the end of the inner cylinder 3112, and the sound outlet hole 3112a is connected to the sound outlet hole 321.

[0049] For some examples, see Figure 4 , Figure 5 and Figure 8 The main shell 311 includes an outer shell 3111 and an inner cylinder 3112, wherein the inner cylinder 3112 is arranged on the inner side of the outer shell 3111, and the inner cylinder 3112 and the outer shell 3111 cooperate to form an open groove 311a, wherein a sound outlet hole 3112a is arranged on the inner cylinder 3112, and the sound outlet hole 3112a is connected to the sound outlet hole 321. The embodiment of the present application also includes an acoustic damping net 60, which is installed on the second shell 32 and covers the sound outlet hole 3112a. Specifically, after the sound waves emitted by the speaker assembly 33 enter the acoustic damping net 60, the sound waves can be scattered when in contact, thereby changing the propagation path of the sound waves and reducing their direct propagation distance and intensity. The acoustic damping net 60 can also reflect sound waves of specific frequencies, direct them to insensitive areas or redistribute the sound field, thereby reducing the impact of noise on sensitive areas. In this way, the acoustic damping net 60 can adjust the sound quality of the ear clip type earphone 1 and improve the user experience.

[0050] In order to facilitate the installation of the speaker assembly 33 on the main housing 311, a mounting cavity 311b is formed in the main housing 311, and the speaker assembly 33 is accommodated in the mounting cavity 311b. Figure 8 The main housing 311 can be formed by assembling a front housing 3113 and a rear housing 3114, wherein the front housing 3113 and the rear housing 3114 together enclose a mounting cavity 311b, and the knob 312 can be sleeved on the outside of the front housing 3113, or can be sleeved on the outside of both the front housing 3113 and the rear housing 3114. The above-mentioned stopper 34 is plug-connected with the front housing 3113, and the front housing 3113 is provided with the above-mentioned inner cylinder 3112 and the open groove 311a. In this way, the main housing 311 is divided into two parts, which is convenient for processing and installation with other parts.

[0051] The embodiment of the present application further includes a protective net 70, which is installed on the second housing 32 and covers the sound outlet 321. The protective net 70 can be made of metal or plastic. The protective net 70 is mainly used to prevent external impurities from entering the earphone through the sound outlet 321, protect the internal sound unit and other components, and extend the service life of the device.

[0052] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An open earphone, characterized in that, It includes a functional component, a sound - generating component, and a connecting bridge connecting the functional component and the sound - generating component. The sound - generating component includes: a first housing connected to the connecting bridge; and a second housing having a sound - outlet hole. The second housing is nested and rotatably connected to the first housing so that the second housing can be telescoped relative to the first housing, thereby enabling the open - type earphone to adjust the distance between the sound - outlet hole and the user's ear canal opening when worn.

2. The open earphone according to claim 1, characterized in that The second housing is in threaded cooperation with the first housing.

3. The open earphone according to claim 1, wherein One of the first housing and the second housing is provided with a spiral groove, and the other of them is provided with spiral threads, and the threads are in threaded cooperation with the spiral groove.

4. The open earphone according to claim 3, wherein, The first housing includes a main housing and a knob. The knob is rotatably sleeved outside the main housing. One of the knob and the second housing is provided with the spiral groove, and the other is provided with the threads.

5. The open earphone according to claim 4, wherein A limiting member is provided on the main housing for limiting the knob to prevent the knob from detaching from the main housing in the direction away from the connecting bridge.

6. The open earphone according to claim 5, wherein, The knob includes a sleeve portion and an installation portion extending inwards from the sleeve portion. The sleeve portion is sleeved outside the main housing. The installation portion is connected to the end of the sleeve portion away from the connecting bridge. The installation portion is provided with the threads, and the second housing has the spiral groove; The limiting member is connected to the side of the main housing away from the connecting bridge and is in limiting abutment with the installation portion.

7. The open earphone according to claim 6, wherein, The limiting member includes a base body and a pin. The pin protrudes from the base body; A slot is provided on the end face of the main housing away from the connecting bridge. The pin is inserted into the slot, and the base body limits the installation portion.

8. The open earphone according to claim 7, characterized in that, An avoidance groove extending along its circumferential direction is provided on the installation portion. The pin passes through the avoidance groove, and during the rotation of the knob relative to the main housing, the pin slides relatively along the avoidance groove.

9. The open earphone according to claim 7, characterized in that, The base body is annularly arranged and forms a limiting hole. The second housing passes through the limiting hole.

10. The open earphone according to claim 6, wherein, The installation portion includes a connecting body and an inward - folded edge connected to each other. The connecting body is connected to the sleeve portion. The inward - folded edge is provided with the threads and is spaced from the sleeve portion. The sleeve portion, the connecting body, and the inward - folded edge jointly enclose a sliding groove. A part of the first housing is embedded in the sliding groove and can slide relatively along the sliding groove.

11. The open earphone according to claim 6, wherein A notch groove is further provided on the outer wall surface of the main housing. The sleeve portion is received in the notch groove, and the outer wall surface of the sleeve portion is coplanar with the outer wall surface of the main housing.

12. The open earphone according to claim 6, wherein, It further includes a damping member. The damping member is clamped between the knob and the main housing for providing a damping force during the rotation of the knob and the main housing.

13. The open earphone according to any one of claims 4 to 12, characterized in that, An open - mouth groove is provided on the side of the main housing facing the second housing. The second housing is located in the open - mouth groove and can perform telescopic movement along the open - mouth groove.

14. The open earphone according to claim 13, wherein One of the tank walls of the open tank and the second housing is provided with a guide rib, and the other of the two is provided with a guide groove. Both the guide rib and the guide groove extend along the telescopic direction of the second housing, and the guide rib is in sliding fit with the guide groove.

15. The open earphone according to claim 13, characterized in that, The main housing includes an outer housing and an inner cylinder. The inner cylinder is disposed inside the outer housing, and an open tank is formed at intervals between the inner cylinder and the outer housing. Sound outlet holes are provided at the ends of the inner cylinder, and the sound outlet holes are communicated with the sound output holes.

16. The open earphone according to claim 15, wherein, It further includes a protective net, and the protective net is installed on the second housing and covers the sound output holes.

17. The open earphone according to claim 15, wherein It further includes an acoustic damping net, and the acoustic damping net is installed on the second housing and covers the sound outlet holes.

18. The open earphone according to claim 17, characterized in that, The sound generating component includes a speaker assembly. The speaker assembly is installed on the first housing or the second housing, and the sound emitted by the speaker assembly is transmitted to the user's ear canal through the sound outlet holes and the sound output holes.

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